2720087 has 4 divisors (see below), whose sum is σ = 2731176. Its totient is φ = 2709000.

The previous prime is 2720071. The next prime is 2720089. The reversal of 2720087 is 7800272.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2720087 - 2⁴ = 2720071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5168 + ... + 5669.

It is an arithmetic number, because the mean of its divisors is an integer number (682794).

2^2720087 is an apocalyptic number.

2720087 is a deficient number, since it is larger than the sum of its proper divisors (11089).

2720087 is a wasteful number, since it uses less digits than its factorization.

2720087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11088.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 2720087 is about 1649.2686257854. The cubic root of 2720087 is about 139.5921292049.

It can be divided in two parts, 27200 and 87, that multiplied together give a triangular number (2366400 = T₂₁₇₅).

The spelling of 2720087 in words is "two million, seven hundred twenty thousand, eighty-seven".